On the heels of the tragic Newtown, Conn. school shooting which left 26 people dead, this evening "Piers Morgan Tonight" invited Larry Pratt to the program to share his strong perspective on the firearm debate.

"Since we have concealed carry laws in all of our country now, people can get a concealed firearm. And yet, we have laws that say not in schools," the Executive Director of Gun Owners of America said. "And so in the very places that have been sought out by monsters such as the murderer of these adults and children, we're saying, 'no, we don't want you to be able to defend yourself. It's better that you just sit there and wait to be killed.' And we find that morally incomprehensible."

Tonight, "Piers Morgan Tonight" welcomes Dr. Michael Welner and Dr. Mehmet Oz for an insightful discussion inside the mind of a killer. Welner, a forensic psychiatrist at NYU Medical Center, says the shooter's behavior in the Sandy Hook Elementary School massacre was disgusting. "This is an indefensible act," he says.

"If we don't collectively, in the press and leadership, say 'this is disgusting, this is repulsive' but rather to say 'who failed him?' then everyone who has a grievance, like him, who nurtures it and then says finally 'I want my grievance to be heard because I'm anonymous' there is an incentive for relevance and there is a vehicle for escapism of video game immersion who want to be deadened to crawl in the cracks and stay there where no one can discover them until it's too late."

Oz, host of "The Dr. Oz Show" is more concerned with mental health than guns in America: FULL POST

This evening, "Piers Morgan Tonight" continues our discussion about gun control and gun violence in America as Piers Morgan welcomes voices from different sides of the debate including Larry Pratt, the executive director of Gun Owners of America, and CNN legal analyst Jeff Toobin.

Also this evening, Congresswoman Carolyn McCarthy and Congressman Ron Barber join the program to discuss gun policy as well as efforts on Capitol Hill to address this most recent display of gun violence.

Dr Mick North, whose daughter was killed in the Dunblane school massacre in 1996, speaks to Morgan exclusively from Scotland and gives his perspective on being a surviving parent and a member of a community who survived a similarly tragic event such as the most recent school shooting at Sandy Hook Elementary.

And Dr. Mehmet Oz and Dr. Michael Welner give their analysis on the mental stability of the Sandy Hook Elementary shooter as well as their insight on the psychiatric profile of other perpetrators of similar crimes.

As the community of Newtown, Conn. begins the difficult process of moving on from the devastating school shooting, Piers Morgan spoke with Philip Van Cleave from the Virginia Citizens Defense League. The staunch gun ownership supporter was on the program to respond to remarks he made about the Bushmaster rifle, calling the gun (that was allegedly used by the gunman to kill 20 children between the ages of 6 and 7) the "Ferrari" of weapons.

Morgan took offense to the remarks and openly criticized Cleave. "It is a disgrace to America and to the American people that it's continued to happen," Morgan said. "And the reasons it happens, and I say this with respect to you, is your facetious attitude comparing it to cars."

Also on Monday night, Morgan welcomed family members and friends of those who perished in the Aurora, Colorado movie theater shooting last July.

"I think it really takes somebody in our position, once we've lost somebody, once we've known somebody who's been injured, they've got lasting post traumatic stress syndrome, to really see the effects and damages it causes," said Jessica Watt whose cousin was killed by the Aurora shootings and whose husband survived the school shooting in Columbine. FULL POST